SEMISPIXALIS DO RSI 



421 



Origin. — The back of the transverse processes of the sixth to the tenth tho- 

 racic vertebra3. 



Kectua capitis posticus 

 luiaor 



Fig. 308. — The Sixth Layee of the Mlscles of the Back. 



Complexus ^-^ 



Obliquus superior 



Rectus capitis posticus major 



Obliquus inferior 



Multifldus spinas 



Semispinalis colli 

 Cervicalis ascendens 



liOngissimus dorsi 



Semispinalis dorsi 



Levator costae 



Longissimus dorsi 

 Ilio-costalis 



Obliquus internus 

 Lumbar fascia 



Ilio-costalis 



SEVENTH CERVICAL VERT:3:iA 



Multifldus spinas 



TWELFTH THORACIC VERTEBRA 



Multifldus spinae 



FIFTH LUMBAR VERTEBRA 



Multifldus spinae 



Insertion. — The spines of the last two cervical, and first four thoracic verteltrai. 

 Structure. — Arising by long slender tendons, the fleshy fibres f<jrm a thin sheet 



